What are your best and worst habits?

A new study suggests that people are more likely to stick to their habits, rather than developing new ones, when they're feeling stressed or under pressure.
The University of South California studied 65 students for 10 weeks over exam period.
They found when students were stressed and hadn't slept much, they were more likely to stick to their good or bad habits, such as what they eat, watch on TV and how regularly they exercise.
The findings which were published in the Journal of Personality and Social Psychology, also found that some people developed bad habits for a short period of time whilst they were feeling under pressure.
I asked if you have any bad or good habits?

Dec 2 2013:
My best habit is that I can find beauty in even the smallest or darkest places... and enjoy it with an open mind.
My worst habit has to be my laziness which usually results in me leaving certain things unfinished.